Home / 628,984.80-943,477.20-329,349.60

Finding the Fourth Proportional to 628,984.80, 943,477.20 and 329,349.60

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Solution

The fourth proportional to 628,984.80, 943,477.20 and 329,349.60 is: 494,024.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,984.80 : 943,477.20 = 329,349.60 : x
  2. Step 2: Convert to fraction form
    628,984.80/943,477.20 = 329,349.60/x
  3. Step 3: Cross multiply
    628,984.80x = 943,477.20 × 329,349.60
  4. Step 4: Simplify right side
    628,984.80x = 310,733,838,429.12
  5. Step 5: Solve for x
    x = 310,733,838,429.12/628,984.80
  6. Step 6: Final answer
    x = 494,024.40

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.